Patents by Inventor Robert D. Pifer

Robert D. Pifer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microemulsion useful as rinse aid
    Patent number: 5827451
    Abstract: Disclosed are isotropic oil-in-water microemulsions containing an oil component of a fatty acid, fatty alcohol, or ester thereof; a quaternary ammonium component; an ether component; and water. The microemulsions are useful to apply removable hydrophobic films to a surface, rendering them useful in e.g. carwashes.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: October 27, 1998
    Assignee: Witco Corporation
    Inventors: Wayne J. Cummings, Robert D. Pifer, Frank H. Stevens